Shell effect on stabilization processes following multi-electron transfer in slow Ar q+–Ar ( q = 6–9, 11) collisions

Abstract

We experimentally investigate the shell effect on the stabilization processes following the multi-electron transfer in slow collisions of Ar q +–Ar ( q = 6–9, 11). The relative cross-section ratios of multi-electron transfer and of the subsequent stabilization with respect to single-electron capture are measured meanwhile compared with the theoretical results predicted by the classical over-barrier model. Our result indicates that the multi-electron transfer is dominant when the projectile charge is large and the subsequent stabilization shows a dramatic variation if the projectile L-shell configuration becomes open. It shows that the subsequent stabilization processes of multiply excited scattering ions have a strong dependence on the projectile shell.